Torque: a Rigid Rectangular Loop, Which Measures 0

question 86

Multiple Choice

Torque: A rigid rectangular loop, which measures 0.30 m by 0.40 m, carries a current of 5.5 A, as shown in the figure. A uniform external magnetic field of magnitude 2.9 T in the negative x direction is present. Segment CD is in the xz-plane and forms a 35° angle with the z-axis, as shown. Find the magnitude of the external torque needed to keep the loop in static equilibrium.

• A) 1.1 N ∙ m
• B) 0.73 N ∙ m
• C) 1.3 N ∙ m
• D) 1.4 N ∙ m
• E) 1.6 N ∙ m

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